I do not know much about LS engines. The car is a 71 Chevelle with a 05 GTO lS2.
I exited of the freeway this morning when coming to the stop light the car just died, it turns over but will not fire.

Where should I start to look first?

 

fuel pressure

 

If were fuel pressure, wouldn't it still try to fire or spit and sputter?

 

Not necessarily. Time to get a gauge on the fuel rail.

Can you hear the fuel pump prime when you first turn the key?

Honestly, from your symptoms it could be about a dozen different things.

Andrew

 

Thanks for the quick response guys.

I figured it out I went back to the basics spark and fuel the car has a Ricks tank and I could not hear the pump so I started looking for fuses turns out a fuse had blown, as of yet I don't know why. I got to say though the guys that did this install cut some corners on the stuff that most people don't see like the wiring under the dash.